142760

Appears in sequences

• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite NON = Nonasil-[ 4158 ] [Si88O176].4R starting with a T3 atom.at n=15A019213
• a(n) is the first k such that A277515(k) is the n-th prime.at n=31A278107
• a(n) = permanent of the n X n matrix with entries a(i, i) = i*(i+1)/2 and a(i, j) = 1 elsewhere.at n=5A303001
• a(n) = 2*n^3 + 9*n^2 + 9*n.at n=40A303609
• Numbers k such that 367*2^k+1 is prime.at n=18A323008
• Irregular triangle read by rows: T(n,k) (n>=2, k>=1) is the number of strong digraphs on n nodes with k descents.at n=21A339807